Numerous differences exist between the COCO image-text dataset [1]} and MIMIC-CXR radiograph-report dataset. X-ray data are grayscale, and distinguishing content is present in small, local regions of the image. In contrast, COCO images are available in RGB, and context is gained by looking at wide regions of the image. We follow Xie et al. [2]} and alter the first layer of the standard ResNet-50 architecture used in VirTex to accept 1-channel images. We also adjust the size of the input images to 256\(\times \) 256.
